{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The theory of harmonics: or, an illustration of the Grecian harmonica. In two parts: ... With plates, an introduction to each part, and a general index. By John Keeble, ...","author_name":"John Keeble","thumbnail_url":"https://www.ebooknetworking.net/books/117/038/big1170381057.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1170381057.html\">The theory of harmonics: or, an illustration of the Grecian harmonica. In two parts: ... With plates, an introduction to each part, and a general index. By John Keeble, ...</a>","width":400,"height":300}